Production method for container foil

Abstract

The invention belongs to the manufacture of aluminium alloy material, and relates to a manufacture method of foil used on a container. The manufacture method in sequence executes the steps as follows:(a) smelting and cast-rolling are executed, the aluminium alloy material whose tab is 3003 is processed through conventional smelting and cast-rolling, and the stock thickness ranges from 7.5 to 8.2mm after cast-rolling; (b) the stock thickness is processed through high temperature annealing after being controlled between 3.5 and 4.5mm through cold rolling, the annealing temperature ranges from 560 to 600 DEG C, and the annealing time is 20 to 25 hours; (c) blank material, which is processed through high temperature annealing, is processed to reach the final product thickness through conventional cold rolling and foil rolling, and then final product is obtained through annealing; the anneal comprises the steps that the anneal lasts for 4 to 8 hours under the annealing temperature that is200 DEG C first, and then the anneal lasts for 12 to 20 hours under the annealing temperature that is 300 DEG C. The manufacture method manufactures the foil used on the container based on the cast-rolling technology, the mechanical performance index of the obtained products can fully satisfy the use requirements of the foil used on the container, and the cost thereof is much lower than that of the foil which is used on a container and manufactured by adopting the hot rolling technology.

Description

technical field [0001] The invention belongs to the manufacture of aluminum alloy materials, and relates to a method for manufacturing container foil. Background technique [0002] Existing container foils for the manufacture of aluminum alloy containers are generally made of 8011 alloy, 3003 alloy, etc., and the processing technology is generally hot-rolled to obtain better mechanical properties, such as: tensile strength, elongation, etc. Rate, cupping and other properties, so that better product quality can be obtained when producing deep-drawn parts, and the defective rate can be reduced. However, the production cost of the hot rolling process is higher, which increases the cost of the container foil. If the casting-rolling process is used to produce container foil, although the production cost is low, the mechanical properties of the container foil produced by the traditional casting-rolling process after annealing are quite different from those produced by the hot-rol...

AI Technical Summary

Problems solved by technology

If the casting-rolling process is used to produce container foil, although the production cost is low, the mechanical properties of the container foil produced by the traditional casting-rolling process after annealing are quite different from those produced by the hot-rolling process, which is difficult to meet the production of deep-drawing parts. Require

Images